This simple SCR trigger was found in a 1965 General Electric SCR manual. The circuit makes use of a diac, and the transistor supports an equivalent.
In the figure we have two simple configurations of voltage doublers. Resistors and diodes are...
The integrated circuit used in this application is the National Semiconductor's LM2907, the...
This fourth-order filter was found in American documentation from the 90s. The circuit applies to...